java excel导出控件_如何使用JExcel导出Excel文件

- 日理万妓 2022-11-06 04:57 415阅读 0赞

JExcel是java导出Excel的一个开源工具包。有的时候需要将数据导到Excel文件中以便观看。

核心代码如下:

package test;

import java.io.File;

import java.io.IOException;

import java.util.Calendar;

import java.util.Date;

import jxl.Cell;

import jxl.CellType;

import jxl.DateCell;

import jxl.LabelCell;

import jxl.NumberCell;

import jxl.Sheet;

import jxl.Workbook;

import jxl.read.biff.BiffException;

import jxl.write.DateFormat;

import jxl.write.DateTime;

import jxl.write.Label;

import jxl.write.Number;

import jxl.write.NumberFormat;

import jxl.write.NumberFormats;

import jxl.write.WritableCell;

import jxl.write.WritableCellFormat;

import jxl.write.WritableFont;

import jxl.write.WritableSheet;

import jxl.write.WritableWorkbook;

import jxl.write.WriteException;

import jxl.write.biff.RowsExceededException;

public class TutorialMain \{

/\*\*

\* WritingSpreadSheet

\*/

public void WritingSpreadSheet() \{

try \{

//创建一个WorkBook，即一个Excel文件，文件目录为param0

WritableWorkbook workbook = Workbook.createWorkbook(new File("c:\\\\output.xls"));

//创建一个Sheet，即表单，名字为param0;位置为param1

WritableSheet sheet = workbook.createSheet("First Sheet Name", 0);

sheet.setColumnView(0, 30); // 设置列的宽度

sheet.setColumnView(1, 30); // 设置列的宽度

sheet.setColumnView(2, 30); // 设置列的宽度

sheet.setRowView(6, 1000); // 设置行的高度

sheet.setRowView(4, 1000); // 设置行的高度

sheet.setRowView(5, 1000); // 设置行的高度

//创建一个Label，x坐标param0，y坐标param1，名字为param2

Label label = new Label(0, 2, "A label record");

//将该Label

sheet.addCell(label);

//创建一个Number，x坐标param0，y坐标param1，数值为param2

Number number = new Number(3, 4, 3.1459);

sheet.addCell(number);

/\*\*

\* 格式化信息

\*/

// Create a cell format for Arial 10 point font

WritableFont arial10font = new WritableFont(WritableFont.ARIAL, 10);

WritableCellFormat arial10format = new WritableCellFormat (arial10font);

// Create the label, specifying content and format

Label label2 = new Label(1,0, "Arial 10 point label", arial10format);

sheet.addCell(label2);

Label label3 = new Label(2, 0, "Another Arial 10 point label", arial10format);

sheet.addCell(label3);

// Create a cell format for Times 16, bold and italic

WritableFont times16font = new WritableFont(WritableFont.TIMES, 16, WritableFont.BOLD, true);

WritableCellFormat times16format = new WritableCellFormat (times16font);

// Create the label, specifying content and format

Label label4 = new Label(3,0, "Times 16 bold italic label", times16format);

times16format.setBackground(jxl.format.Colour.BLUE);

times16format.setAlignment(jxl.format.Alignment.CENTRE);

sheet.addCell(label4);

/\*\*

\* 格式化数值

\*/

WritableCellFormat integerFormat = new WritableCellFormat (NumberFormats.INTEGER);

Number number2 = new Number(0, 4, 3.141519, integerFormat);

sheet.addCell(number2);

WritableCellFormat floatFormat = new WritableCellFormat (NumberFormats.FLOAT);

Number number3 = new Number(1, 4, 3.141519, floatFormat);

sheet.addCell(number3);

NumberFormat fivedps = new NumberFormat("\#.\#\#\#\#\#");

WritableCellFormat fivedpsFormat = new WritableCellFormat(fivedps);

Number number4 = new Number(2, 4, 3.141519, fivedpsFormat);

sheet.addCell(number4);

WritableCellFormat fivedpsFontFormat = new WritableCellFormat (times16font, fivedps);

Number number5 = new Number(3, 4, 3.141519, fivedpsFontFormat);

sheet.addCell(number5);

/\*\*

\* Formatting Dates

\*/

// Get the current date and time from the Calendar object

Date now = Calendar.getInstance().getTime();

DateFormat customDateFormat = new DateFormat ("dd MM yyyy hh:mm:ss");

WritableCellFormat dateFormat = new WritableCellFormat (customDateFormat);

DateTime dateCell = new DateTime(0, 6, now, dateFormat);

sheet.addCell(dateCell);

/\*\*

\* 合并单元格

\*/

WritableSheet sheet1 = workbook.createSheet("First Sheet", 1);

sheet1.mergeCells(0, 0, 1, 1);

// All sheets and cells added. Now write out the workbook

workbook.write();

workbook.close();

System.out.println("创建成功..");

\} catch (IOException e) \{

// TODO Auto-generated catch block

System.out.println("创建失败..");

e.printStackTrace();

\} catch (RowsExceededException e) \{

// sheet.addCell Exception

System.out.println("创建失败..");

e.printStackTrace();

\} catch (WriteException e) \{

System.out.println("创建失败..");

// TODO Auto-generated catch block

e.printStackTrace();

/\*\*

\* @param filePath 文件路径

\* @param fileName 文件名

\*/

public void ReadingSpreadSheets(String filePath,String fileName)\{

try \{

Workbook workbook = Workbook.getWorkbook(new File(filePath + "\\\\" + fileName));

Sheet sheet = workbook.getSheet(0);

Cell a1 = sheet.getCell(0,0);

Cell b2 = sheet.getCell(1,1);

Cell c2 = sheet.getCell(2,1);

String stringa1 = a1.getContents();

String stringb2 = b2.getContents();

String stringc2 = c2.getContents();

double numberb2 = 0;

Date datec2 = null;

if (a1.getType() == CellType.LABEL)

LabelCell lc = (LabelCell) a1;

stringa1 = lc.getString();

if (b2.getType() == CellType.NUMBER)

NumberCell nc = (NumberCell) b2;

numberb2 = nc.getValue();

if (c2.getType() == CellType.DATE)

DateCell dc = (DateCell) c2;

datec2 = dc.getDate();

// 其他处理

// ...

// 结束后关闭文件并释放内存

workbook.close();

System.out.println("读取成功..");

\} catch (BiffException e) \{

// TODO Auto-generated catch block

System.out.println("读取失败..");

e.printStackTrace();

\} catch (IOException e) \{

// TODO Auto-generated catch block

System.out.println("读取失败..");

e.printStackTrace();

public void copyWorkBook(String oldFilePath,String oldFileName,String newFilePath,String newFileName )\{

try \{

Workbook workbook = Workbook.getWorkbook(new File( oldFilePath + "\\\\" + oldFileName ));

WritableWorkbook copy = Workbook.createWorkbook(new File( newFilePath +"\\\\" +newFileName ), workbook);

//进行一些操作

WritableSheet sheet = copy.getSheet(1);

WritableCell cell0 = sheet.getWritableCell(1, 2);

if (cell0.getType() == CellType.LABEL)

Label l0 = (Label) cell0;

l0.setString("modified cell");

WritableSheet sheet2 = copy.getSheet(1);

WritableCell cell = sheet2.getWritableCell(2, 4);

NumberFormat fivedps = new NumberFormat("\#.\#\#\#\#\#");

WritableCellFormat cellFormat = new WritableCellFormat(fivedps);

cell.setCellFormat(cellFormat);

Label label = new Label(0, 2, "New label record");

sheet2.addCell(label);

Number number = new Number(3, 4, 3.1459);

sheet2.addCell(number);

// 所有的都完成，关闭资源

workbook.close();

copy.write();

copy.close();

\} catch (BiffException e) \{

// TODO Auto-generated catch block

e.printStackTrace();

\} catch (IOException e) \{

// TODO Auto-generated catch block

e.printStackTrace();

\} catch (RowsExceededException e) \{

// TODO Auto-generated catch block

e.printStackTrace();

\} catch (WriteException e) \{

// TODO Auto-generated catch block

e.printStackTrace();

public static void main(String\[\] args)\{

TutorialMain main = new TutorialMain();

main.WritingSpreadSheet();

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java excel导出控件_如何使用JExcel导出Excel文件

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